THE 5.0 NAPA QUAKE THAT DIDN'T REALLY HAPPEN

A magnitude 5.0 earthquake just struck seven miles N.E. of Napa ,California
The temblor had a depth of 3 miles and some say it was felt in San Fransisco. Others dispute that.

Napa Valley Earthquake: Magnitude 5.0 Strikes Northern California
The magnitude 5.0 quake struck near the town of Napa at 12:43 PDT.
Napa is best known for its vineyards and wineries. No damage or injury reports at this time.
The temblor was felt as far north as Hayward, which is located in the east bay of San Francisco.

Maps from the USGS show the quake was felt as far north as Hayward, located in the east bay area of San Francisco.

The following statistics are from the USGS.

Magnitude 5.0
Date-Time

* Friday, April 30, 2010 at 19:43:00 UTC
* Friday, April 30, 2010 at 12:43:00 PM at epicenter

Location 38.370°N, 122.205°W
Depth 5 km (3.1 miles) (poorly constrained)
Region NORTHERN CALIFORNIA
Distances

* 11 km (7 miles) NE (48°) from Napa, CA
* 13 km (8 miles) NNW (344°) from Green Valley, CA
* 14 km (9 miles) ESE (105°) from Yountville, CA
* 20 km (13 miles) W (275°) from Vacaville, CA
* 29 km (18 miles) N (5°) from Vallejo, CA
* 64 km (40 miles) N (2°) from Oakland, CA

Location Uncertainty horizontal +/- 14.9 km (9.3 miles); depth +/- 17.7 km (11.0 miles)
Parameters Nph= 5, Dmin=65 km, Rmss=0.2 sec, Gp=209°,
M-type=duration magnitude (Md), Version=0
Source

* California Integrated Seismic Net:
* USGS Caltech CGS UCB UCSD UNR

Event ID nc71390496
This event has not yet been reviewed by a seismologist.

So here we go again–California and earthquakes. Let’s all hope the aftershocks are minimal and that no one is injured.

We welcome your comments and theories on the earthquake-outbreak below.

Napa Valley Earthquake: Magnitude 5.0 Strikes Northern California is a developing story so please check back for updates.

Update: Earthquake didn’t happen

Hi Geenee. That is the problem with the "automatic solution". When it's working correctly it's great, but when it messes up it can cause all kinds of problems. Where this one came from I have no idea as there isn't one single seismograph recording a quake of any size occurring at that time.

That is one thing I learned early on when the "automatic solution" was brought on line. Check the seismographs before making any statements or posts. Take Care...Don

http://quake.wr.usgs.gov/waveforms/helicorder/CPI_EHZ_NC_--_00_22221212.html

How do people feel a quake that did not happen?

how did a quake occur and was not recorded? I also called the Napa Police department and they stated they never had a quake. The number is 707-257-9223.

People do all kinds of crazy things just to get into the act. Some even tell false stories. Take Care...Don

Don in Hollister wrote:Hi Geenee. That is the problem with the "automatic solution". When it's working correctly it's great, but when it messes up it can cause all kinds of problems. Where this one came from I have no idea as there isn't one single seismograph recording a quake of any size occurring at that time.

That is one thing I learned early on when the "automatic solution" was brought on line. Check the seismographs before making any statements or posts. Take Care...Don

http://quake.wr.usgs.gov/waveforms/helicorder/CPI_EHZ_NC_--_00_22221212.html

Hi Don, Yah that is good advice. I was posting a news article that I found on line. I just thought that was a funny
article. I forgot the link.